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AD7671: 16-Bit, 1 MSPS CMOS ADC Data Sheet (Rev. C)9/28/2006PDF660 kB
Overview
Features and Benefits
- Throughput
1 MSPS (Warp Mode)
800 kSPS (Normal Mode) - INL: ±2.5 LSB Max (±0.0038% of Full Scale)
- 16-Bit Resolution with No Missing Codes
- S/(N+D): 90 dB Typ @ 250 kHz
- Analog Input Voltage Ranges
Bipolar: ±10 V, ±5 V, ±2.5 V
Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V
- THD: –100 dB Typ @ 250 kHz
- Both AC and DC Specifications
- No Pipeline Delay
- Parallel (8/16 Bits) and Serial 5 V/3 V Interface
- SPI®/QSPI™/MICROWIRE™/DSP Compatible
- Single 5 V Supply Operation
- Power Dissipation
112 mW Typical
15 µW @ 100 SPS
Product Details
The AD7671 is a 16-bit, 1 MSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains a high speed 16-bit sampling ADC, a resistor input scaler that allows various input ranges, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.
The AD7671 is hardware factory-calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.
It features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous conversion rate applications, and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.
It is fabricated using Analog Devices’ high performance, 0.6 micron CMOS process and is available in a 48-lead LQFP and a tiny 48-lead LFCSP, with operation specified from –40°C to +85°C.
PRODUCT HIGHLIGHTS
- Fast Throughput
The AD7671 is a very high speed (1 MSPS in Warp Mode and 800 kSPS in Normal Mode), charge redistribution, 16-bit SAR ADC. - Single-Supply Operation
The AD7671 operates from a single 5 V supply, dissipates only 112 mW typical, even lower when a reduced throughput is used with the reduced power mode (Impulse) and a power-down mode. - Superior INL
The AD7671 has a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit code. - Serial or Parallel Interface
Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.
APPLICATIONS
- Data Acquisition
- Communication
- Instrumentation
- Spectrum Analysis
- Medical Instruments
- Process Control
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015PDF427 K
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AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)2/14/2015PDF299 kB
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AN-594: Modifying the Input Voltage Range of the AD7663, AD7665 or AD7671 PulSAR 16-Bit ADCs (Rev. A)1/1/2000PDF141 kB
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8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog3/8/2008PDF1885 kB
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The Data Conversion Handbook, 20051/2/2005
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MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design2/14/2015PDF152 kB
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MT-031: Grounding Data Converters and Solving the Mystery of "AGND" and "DGND"3/20/2009PDF144 kB
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MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB", and Why You Should Care3/4/2009PDF94 kB
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SAR ADC & Driver Quick-Match Guide9/13/2013PDF251 kB
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Designing Power Supplies for High Speed ADC2/1/2012
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High Speed Op Amp Drives a 16-Bit, 1-MSPS Differential-Input A/D Converter11/1/2002 Analog Dialogue
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Sampling ADC Breaks Speed Barrier Without Compromising Power5/21/2001
Product Recommendations
AD7671 Companion Parts
Recommended Digital Isolators
- For SPI Interface, low power, 5.0 kVrms isolation: ADUM4401.
- For SPI Interface, lowest power, 2.5 kVrms isolation: ADUM1401.
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation: ADUM3401.
- For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V): ADUM3481.
Recommended External Voltage References
Recommended Driver Amplifiers
- For high frequency, low noise, low distortion applications: ADA4897-1, AD8021.
- For low frequency, precision, low bias current applications: ADA4627-1, ADA4637-1, AD8610.
- For precision, low power, low distortion applications: ADA4841-1, ADA4896-2, AD8031.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
AD7671 Discussions
Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.